85098-03-9Relevant articles and documents
Studies on organometallic hetero-multiple-bridged molecules. 8. Preparation and crystal and molecular structures of diphenyl dichalcogenide complexes of manganese(I). Kinetic, spectroscopic, and equilibrium data: A quantitative assessment of the solid-state and solution properties within members of homogeneous families of chalcogenide low-valent metal complexes
Atwood, Jerry L.,Bernal, Ivan,Calderazzo, Fausto,Canada, Larry G.,Poli, Rinaldo,Rogers, Robin D.,Veracini, Carlo Alberto,Vitali, Dario
, p. 1797 - 1804 (2008/10/08)
The first organic dichalcogenide complexes of manganese(I), Mn2Br2(CO)6Se2Ph2 (I) and Mn2Br2(CO)6Te2Ph2 (II), have been prepared by the reaction of halo carbonyl derivatives of manganese(I) with the appropriate dichalcogenide in diethyl or diisopropyl ether as solvent. The crystal and molecular structure of I has been solved by X-ray diffraction methods. The compound belongs to the monoclinic space group C2/c with a = 11.618 (3) ?, b = 10.576 (3) ?, c = 10.456 (4) ?, β = 106.94 (2)°, V = 2286.9 ?3, and Dcalcd = 2.18 g cm-3 for Z = 4. Both I and II are hetero-multiple-bridged (HMB) molecules consisting of two hexacoordinated metal centers sharing a common edge composed of two bridging bromides and joined by a bidentate E-E bridge. For the manganese complexes and for the corresponding rhenium(I) complexes the ligand displacement reactions by carbon monoxide, tetrahydrofuran, and E′2Ph2 have been studied and kinetic or equilibrium data have been collected by gas volumetry, by IR spectrophotometry, and by 13C NMR spectrometry, respectively. The results establish increased stability of these complexes in the sequence S Se Te.
